渤海湾浮游植物群落特征及其环境影响因子

发布时间：2018-07-18 15:01

【摘要】：于2013年8月、11月分别对渤海湾近岸海域28个点位的浮游植物及水质进行了同步监测调查,并应用冗余分析建立了浮游植物丰度与水环境因子的关系。结果表明,浮游植物共计4门79种(属),以硅藻为主,甲藻占据一定比重。8月优势种为尖刺拟菱形藻(Pseudo-nitzschia pungens)、中肋骨条藻(Skeletonema costatum)、窄隙角毛藻(Chaetoceros affinis)、旋链角毛藻(Chaetoceros curvisetus)和丹麦细柱藻(Leptocylindrus danicus);11月优势种为刚毛根管藻(Rhizosolenia setigera)、优美旭氏藻矮小变型(Schro咬derella delicatula)和中肋骨条藻。浮游植物丰度范围在0.039×103～464.8×103cells/L之间,生物量范围在0.013～81.9 mg/L之间。渤海湾近岸海域浮游植物具有较为明显的空间分布差异,富营养化程度呈现近岸高远岸低的特点。冗余分析(RDA)结果表明,溶解氧、总氮、亚硝酸盐、悬浮物、盐度和水温是影响丰度变化的主要环境因子。
[Abstract]:In August and November 2013, the phytoplankton and water quality at 28 points in the coastal waters of Bohai Bay were monitored and investigated simultaneously, and the relationship between phytoplankton abundance and water environmental factors was established by redundancy analysis. The results showed that there were 79 species (genera) of phytoplankton, mainly diatoms. The dominant species in August are Skeletonema costatum), (Chaetoceros curvisetus) and Leptocylindrus danicus); (November). The dominant species in August is Rhizosolenia setigera),. Schro bite derella delicatula) and Scophthora costatum. Phytoplankton abundance ranges from 0.039 脳 10 ~ (3) to 464.8 脳 10 ~ (3) cells / L, and biomass from 0.013 ~ (13) ~ 81.9 mg 路L ~ (-1) 路L ~ (-1). The distribution of phytoplankton in the coastal waters of Bohai Bay is obviously different, and the eutrophication is characterized by high and low near shore. The results of redundancy analysis (RDA) showed that dissolved oxygen, total nitrogen, nitrite, suspended matter, salinity and water temperature were the main environmental factors affecting abundance.
【作者单位】：天津市环境监测中心;
【基金】：环保公益性行业科研专项:近岸海域环境质量综合评价方法研究(201309008-04)
【分类号】：X55;X173

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